dum·found /ˌdʌmˈfaʊnd, ˈdʌmˌ/ (vt.)使說不出話來
Dum·found v. t. [imp. & p. p. Dumfounded; p. pr. & vb. n. Dumfounding.] To strike dumb; to confuse with astonishment. [Written also dumbfound.] ◄ ►